diff --git a/build.gradle b/build.gradle
index c4c029a7..50b938f9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -31,7 +31,7 @@ plugins {
 
 ext {
     grpcVersion = '1.65.1'
-    protoVersion = '3.25.3'
+    protoVersion = '4.27.2'
     containerVersion = '1.20.0'
     kafkaVersion = "7.6.2-ce"
     awsVersion = '2.26.21'
diff --git a/contract/build.gradle b/contract/build.gradle
index 56c6038d..d20e9075 100644
--- a/contract/build.gradle
+++ b/contract/build.gradle
@@ -30,7 +30,7 @@ plugins {
 
 ext {
     grpcVersion = '1.65.1'
-    protoVersion = '3.25.3'
+    protoVersion = '4.27.2'
 }
 
 group 'com.HybridTestFramework'